static unsigned radeon_add_reloc(struct radeon_drm_cs *cs,
struct radeon_bo *bo,
enum radeon_bo_usage usage,
enum radeon_bo_domain domains,
enum radeon_bo_domain *added_domains)
{
struct radeon_cs_context *csc = cs->csc;
struct drm_radeon_cs_reloc *reloc;
unsigned hash = bo->handle & (sizeof(csc->is_handle_added)-1);
enum radeon_bo_domain rd = usage & RADEON_USAGE_READ ? domains : 0;
enum radeon_bo_domain wd = usage & RADEON_USAGE_WRITE ? domains : 0;
bool update_hash = TRUE;
int i;
*added_domains = 0;
if (csc->is_handle_added[hash]) {
i = csc->reloc_indices_hashlist[hash];
reloc = &csc->relocs[i];
if (reloc->handle != bo->handle) {
/* Hash collision, look for the BO in the list of relocs linearly. */
for (i = csc->crelocs - 1; i >= 0; i--) {
reloc = &csc->relocs[i];
if (reloc->handle == bo->handle) {
/*printf("write_reloc collision, hash: %i, handle: %i\n", hash, bo->handle);*/
break;
}
}
}
if (i >= 0) {
/* On DMA ring we need to emit as many relocation as there is use of the bo
* thus each time this function is call we should grow add again the bo to
* the relocation buffer
*
* Do not update the hash table if it's dma ring, so that first hash always point
* to first bo relocation which will the one used by the kernel. Following relocation
* will be ignore by the kernel memory placement (but still use by the kernel to
* update the cmd stream with proper buffer offset).
*/
update_hash = FALSE;
update_reloc_domains(reloc, rd, wd, added_domains);
if (cs->base.ring_type != RING_DMA) {
csc->reloc_indices_hashlist[hash] = i;
return i;
}
}
}
/* New relocation, check if the backing array is large enough. */
if (csc->crelocs >= csc->nrelocs) {
uint32_t size;
csc->nrelocs += 10;
size = csc->nrelocs * sizeof(struct radeon_bo*);
csc->relocs_bo = realloc(csc->relocs_bo, size);
size = csc->nrelocs * sizeof(struct drm_radeon_cs_reloc);
csc->relocs = realloc(csc->relocs, size);
csc->chunks[1].chunk_data = (uint64_t)(uintptr_t)csc->relocs;
}
/* Initialize the new relocation. */
csc->relocs_bo[csc->crelocs] = NULL;
radeon_bo_reference(&csc->relocs_bo[csc->crelocs], bo);
p_atomic_inc(&bo->num_cs_references);
reloc = &csc->relocs[csc->crelocs];
reloc->handle = bo->handle;
reloc->read_domains = rd;
reloc->write_domain = wd;
reloc->flags = 0;
csc->is_handle_added[hash] = TRUE;
if (update_hash) {
csc->reloc_indices_hashlist[hash] = csc->crelocs;
}
csc->chunks[1].length_dw += RELOC_DWORDS;
*added_domains = rd | wd;
return csc->crelocs++;
}
static unsigned radeon_add_reloc(struct radeon_cs_context *csc,
struct radeon_bo *bo,
enum radeon_bo_usage usage,
enum radeon_bo_domain domains,
enum radeon_bo_domain *added_domains)
{
struct drm_radeon_cs_reloc *reloc;
unsigned i;
unsigned hash = bo->handle & (sizeof(csc->is_handle_added)-1);
enum radeon_bo_domain rd = usage & RADEON_USAGE_READ ? domains : 0;
enum radeon_bo_domain wd = usage & RADEON_USAGE_WRITE ? domains : 0;
if (csc->is_handle_added[hash]) {
i = csc->reloc_indices_hashlist[hash];
reloc = &csc->relocs[i];
if (reloc->handle == bo->handle) {
update_reloc_domains(reloc, rd, wd, added_domains);
return i;
}
/* Hash collision, look for the BO in the list of relocs linearly. */
for (i = csc->crelocs; i != 0;) {
--i;
reloc = &csc->relocs[i];
if (reloc->handle == bo->handle) {
update_reloc_domains(reloc, rd, wd, added_domains);
csc->reloc_indices_hashlist[hash] = i;
/*printf("write_reloc collision, hash: %i, handle: %i\n", hash, bo->handle);*/
return i;
}
}
}
/* New relocation, check if the backing array is large enough. */
if (csc->crelocs >= csc->nrelocs) {
uint32_t size;
csc->nrelocs += 10;
size = csc->nrelocs * sizeof(struct radeon_bo*);
csc->relocs_bo = realloc(csc->relocs_bo, size);
size = csc->nrelocs * sizeof(struct drm_radeon_cs_reloc);
csc->relocs = realloc(csc->relocs, size);
csc->chunks[1].chunk_data = (uint64_t)(uintptr_t)csc->relocs;
}
/* Initialize the new relocation. */
csc->relocs_bo[csc->crelocs] = NULL;
radeon_bo_reference(&csc->relocs_bo[csc->crelocs], bo);
p_atomic_inc(&bo->num_cs_references);
reloc = &csc->relocs[csc->crelocs];
reloc->handle = bo->handle;
reloc->read_domains = rd;
reloc->write_domain = wd;
reloc->flags = 0;
csc->is_handle_added[hash] = TRUE;
csc->reloc_indices_hashlist[hash] = csc->crelocs;
csc->chunks[1].length_dw += RELOC_DWORDS;
*added_domains = rd | wd;
return csc->crelocs++;
}
